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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MAX1705EEE датащи(PDF) 4 Page - Maxim Integrated Products |
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MAX1705EEE датащи(HTML) 4 Page - Maxim Integrated Products |
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4 / 20 page  1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator 4 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (VOUT = VPOUT = VLBP = 3.6V, CLK/SEL = FB = LBN = LBO = ONA = ONB = TRACK = GND, REF = open (bypassed with 0.22µF), LX = open, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) ELECTRICAL CHARACTERISTICS (VOUT = VPOUT = VLBP = 3.6V, CLK/SEL = FB = LBN = LBO = ONA = ONB = TRACK = GND, REF = open (bypassed with 0.22µF), LX = open, TA = -40°C to +85°C, unless otherwise noted, Note 4.) PARAMETER SYMBOL MIN TYP MAX UNITS Minimum CLK/SEL Pulse Internal Oscillator Frequency 260 300 340 kHz 200 ns Maximum CLK/SEL Rise/Fall Time 100 ns CONDITIONS CLK/SEL = OUT Supply Current in Low-Power Mode IOUT 190 µA CLK/SEL = 0V, FB = FBLDO = 1.5V, no load Supply Current in Shutdown IOUT 20 µA ONA = 0V, ONB = OUT, measure IOUT OUT Voltage in Track Mode VLDO + VLDO + 0.2 0.4 V TRACK = OUT, VLDO > 2.3V 250 570 MAX1706 MAX1706 CLK/SEL = OUT CLK/SEL = 0V MAX1705 CLK/SEL = OUT CLK/SEL = 0V 0.28 MAX1705 Switch On-Resistance 0.45 Ω N-channel, ILX = 100mA 550 950 N-Channel MOSFET Current Limit ILIM 1000 1700 mA CLK/SEL = OUT 250 570 0.50 CLK/SEL = 0V P-channel, ILX = 100mA PARAMETER SYMBOL MIN TYP MAX P-Channel Synchronous- Rectifier Turn-Off Current UNITS CONDITIONS 20 120 mA Start-Up to Normal Mode Transition Voltage 2.0 2.3 V FB Regulation Voltage 1.215 1.251 V CLK/SEL = OUT Reference Output Voltage 1.235 1.265 V IREF = 0µA Oscillator Maximum Duty Cycle 80 86 90 % External Oscillator Synchronization Range 200 400 kHz Supply Current in Low-Noise Mode IOUT 360 µA CLK/SEL = OUT, VFB = VFBLDO = 1.5V, no load DC-DC CONVERTER REFERENCE DC-DC CONVERTER |
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